Polymorphonuclear leukocytes, phagocytic cells.

Short for polymorphonuclear leukocytes or granulocytes.

A common acronym for polymorphonuclear leucocytes, including basophils, neutrophils and eosinophils.

are organisms which during their life cycle undergo a transition (metamorphosis) between forms. In some species several forms co-exist within one colony at any moment.

Two minerals that have the same chemical composition but a different crystal lattice structure.